Re: [ngl-devel] Very nice but very slow

[Sebastien Metrot]

Don't bother with nuiGetVal. It's only used in the XML parsing at 
startup (and I have soe solution to speed up parsing like hooking a real 
XML parser to the nui API).
I wonder why DrawShade takes that much however glyph handling is known 
to be slow currently (at least I noticed that).

Try to let the test/profile run at least 30 seconds to get realistic 
results.

What profiler are you using? I use VTune (latest version) on Win32. I 
tried TrueTime but found it to be really slow and not very 
useable/helpfull.

Sebastien


advertsux wrote:

> Great, almost two-times faster :o)
>
> But 7 FPS is still very low, i will try to understand library a make 
> some performance tuning.
>
> I started with quickly set profiler and got these results:
>
>        Func          Func+Child           Hit
>        Time   %         Time      %      Count  Function
> ---------------------------------------------------------
>    1252,490  12,2     1305,109  12,7    15819 nuiGetVal(class nuiXMLNode 
> *,class nglString,float) (nuiflags.obj)
>    1205,943  11,8     1249,593  12,2     3360 
> nuiGLDrawContext::DrawShade(class nuiRect const &,class nuiRect const &) 
> (nuigldrawcontext.obj)
>    1143,250  11,1     1143,250  11,1    26956 
> nglFontBase::GetGlyphInfo(class nglGlyphInfo &,unsigned int,enum 
> nglFontBase::GlyphType) (libngl.dll)
>
> More than 30% of time was "wasted" these functions. I think especially 
> nuiGetVal can't get so much. I'm going to find some sort of "caching" 
> for this function.
>
> Martin